*{
    margin: 0;
    padding: 0;
}
$baseColor:#ce0000;

.header{
    background-color: $baseColor;
    height: 50px;
    display: flex;
    justify-content: space-around;
    align-items: center;
}
.shuxian{
    width: 2px;
    height: 15px;
    background-color: white;
}
.xuexi,.wode{
    color: white;
}
.diyike{
    color: gray;
}
.diyike{
    border: 1px solid gray;
    border-radius: 50px;
    background-color: white;
}